CVE-2026-64131

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the memory management subsystem where spurious warnings occur when unmapping device-private or exclusive pages. The system incorrectly uses the vma is anonymous() function to test assumptions in the unmap path, whereas migrate device pages() and make device exclusive() use folio test anon(). Because a folio can be anonymous while its associated Virtual Memory Area (VMA) is filebacked, vma is anonymous() may return false even if folio test anon() is true. This discrepancy can lead to incorrect warnings during process teardown when devices migrate folios to device-private memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.